《流体力学 Fluid Mechanics》课程PPT教学课件（双语版）第九章 渗流

Fluid mechanics

1 Fluid Mechanics

体力

2

Chapter 9 Seepage Flow §9-1 Introduction □]§9-2 Section 1 Basic law of seepage flow D89-3 Uniform and non-uniform flow of groundwater D89-4 Well and catchment passage

3 Chapter 9 Seepage Flow §9-1 Introduction §9–2 Section 1 Basic law of seepage flow §9-3 Uniform and non-uniform flow of groundwater §9-4 Well and catchment passage

第九章渗流 §9-1引言 □§92渗流基本定律 §93地下水均匀流和非均匀流 §9-4井和集水廊道

4 第九章 渗 流 §9-1 引 言 §9–2 渗流基本定律 §9-3 地下水均匀流和非均匀流 §9-4 井和集水廊道

seepage rtow Chapter 9 Seepage Flow § 9-1 Introduction Seepage flow occurs during fluid flows through porous medium Mechanics of seepage flow is the study of fluids movement law in porous media. It is one of offsets of Mechanics of fluids, a subject developed by mechanics of fluids, medium theory, physics and chemistry. biology Seepage phenomenon is common in nature and artificial materials Such as seepage of ground water, hot water and brine seepage of oil natural gas and coal seam gas; seepage of blood micro-circulation and micro-bronchia in animals transportation of water, gas and sugar in plant; seepage of pottery, tile and so on artificial porous materials

5 Chapter 9 Seepage Flow Seepage flow occurs during fluid flows through porous medium ,Mechanics of seepage flow is the study of fluids movement law in porous media. It is one of offsets of Mechanics of fluids, a subject developed by mechanics of fluids, medium theory, physics and chemistry, biology. Seepage phenomenon is common in nature and artificial materials. Such as seepage of groundwater, hot water and brine ;seepage of oil, natural gas and coal seam gas;seepage of blood micro-circulation and micro-bronchia in animals; transportation of water,gas and sugar in plant; seepage of pottery, tile and so on artificial porous materials. §9-1 Introduction

第九章渗流 §9-1引言 渗流是流体通过多孔介质的流动,渗流力学就是研究流体 在多孔介质中运动规律的科学。渗流力学是流体力学的一个分 支,是流体力学与介质理论、表面物理、物理化学以及生物学 交叉渗透而发展起来的一门边缘学科 渗流现象普遍存在于自然界和人造材料中。如地下水、热 水和盐水的渗流;石油、天然气和煤层气的渗流;动物体内的 血液微循环和微细支气管的渗流;植物体内水分、气体和糖分 的输送;陶瓷、砧砖石、砂模、填充床等人造多孔材料中的渗流 等

6 第九章 渗 流 渗流是流体通过多孔介质的流动，渗流力学就是研究流体 在多孔介质中运动规律的科学。渗流力学是流体力学的一个分 支，是流体力学与介质理论、表面物理、物理化学以及生物学 交叉渗透而发展起来的一门边缘学科。 渗流现象普遍存在于自然界和人造材料中。如地下水、热 水和盐水的渗流；石油、天然气和煤层气的渗流；动物体内的 血液微循环和微细支气管的渗流；植物体内水分、气体和糖分 的输送；陶瓷、砖石、砂模、填充床等人造多孔材料中的渗流 等。 §9-1 引 言

seepage rtow Mechanics of seepage is widely applied in application science and project technology Such as mechanics of soil, subterranean hydrology oil engineering, terrestrial heat engineering and micro-mechanism and so on. Furthermore, it is also involved in national defense industry, such as study of gas mask Characteristic of seepage flow: first, the area of unit volume space is very large in porous medium, sur face action is distinct, viscous action is considered to any body and anytime; second, the pressure is large in subterranean seepage flow, so, the compressibility is usual considered third, the complexity of hole, large resistance, capillary effect and force of molecular fourth, complicated process of physics and chemistry

7 Mechanics of seepage is widely applied in application science and project technology.Such as mechanics of soil,subterranean hydrology ,oil engineering, terrestrial heat engineering and micro-mechanism and so on. Furthermore, it is also involved in national defense industry,such as study of gas mask . Characteristic of seepage flow:first, the area of unit volume space is very large in porous medium, surface action is distinct, viscous action is considered to any body and anytime ; second, the pressure is large in subterranean seepage flow, so,the compressibility is usual considered; third, the complexity of hole,large resistance, capillary effect and force of molecular ; fourth, complicated process of physics and chemistry

渗流力学在很多应用科学和工程技术领域有着广泛的应用。如 土壤力学、地下水文学、石油工程、地热工程、给水工程、环境工 程、化工和微机械等等。此外,在国防工业中,如航空航天工业中 的发热冷却,核废料的处理以及诸如防毒面罩的研制等都涉及渗流 力学问题。 渗流的特点在于:第一,多孔介质单位体积空隙的表面积较 大,表面作用明显,任何人和时候都必须考虑粘性作用;第二, 在地下渗流中往往压力较大,因而通常要考虑流体的压缩性;第 三,孔道形状复杂、阻力大、毛细管作用较普遍,有时还要考虑 分子力;第四,往往伴随有复杂的物理化学过程

8 渗流力学在很多应用科学和工程技术领域有着广泛的应用。如 土壤力学、地下水文学、石油工程、地热工程、给水工程、环境工 程、化工和微机械等等。此外，在国防工业中，如航空航天工业中 的发热冷却，核废料的处理以及诸如防毒面罩的研制等都涉及渗流 力学问题。 渗流的特点在于：第一，多孔介质单位体积空隙的表面积较 大，表面作用明显，任何人和时候都必须考虑粘性作用；第二， 在地下渗流中往往压力较大，因而通常要考虑流体的压缩性；第 三，孔道形状复杂、阻力大、毛细管作用较普遍，有时还要考虑 分子力；第四，往往伴随有复杂的物理化学过程

seepage rtow Mechanics of seepage flow is not only long historical but also young science. It has been past one and half centuries since Darcy law The grow up of oil industry in 20th promoted the develop of seepage flow. Along with correlative science develops, it is promote seepage flow again. Recently mechanics of seepage flow developed into a new stage along with develop of nonlinear mechanics; the establishment of bifurcate theory and other theory

9 Mechanics of seepage flow is not only long historical but also young science. It has been past one and half centuries since Darcy law The grow up of oil industry in 20th promoted the develop of seepage flow. Along with correlative science develops, it is promote seepage flow again. Recently mechanics of seepage flow developed into a new stage along with develop of nonlinear mechanics; the establishment of bifurcate theory and other theory

渗流力学是一门既有较长历史又年轻活跃的科学。从达西定 律的出现到现在已过去一个半世纪。20世纪石油工业的崛起极大 地推动了渗流力学的发展。随着相关科学技术的发展,如高性能 计算机的出现,核磁共振、CT扫描成像以及其他先进实验方法 用于渗流,又将渗流力学大大推进了一步。近年来,随着非线性 力学的发展,将分叉、混沌理论以及分形理论用于渗流,其他诸 如格气模型的建立等等,更使渗流力学的发展进入一个全新的阶 段

10 渗流力学是一门既有较长历史又年轻活跃的科学。从达西定 律的出现到现在已过去一个半世纪。20世纪石油工业的崛起极大 地推动了渗流力学的发展。随着相关科学技术的发展，如高性能 计算机的出现，核磁共振、CT 扫描成像以及其他先进实验方法 用于渗流，又将渗流力学大大推进了一步。近年来，随着非线性 力学的发展，将分叉、混沌理论以及分形理论用于渗流，其他诸 如格气模型的建立等等，更使渗流力学的发展进入一个全新的阶 段